public void TestExistingOwnerMatrix()
{
var ownerModel = new TestModel
{
Position = new Vector3(2, 3, 4)
};
var model = new TestModel
{
Owner = ownerModel,
Scale = new Vector3(4, 3, 2)
};
// The order is important, the matrix is cached and needs to get propagated.
ownerModel.UpdateCurrentWorldMatrix();
model.UpdateCurrentWorldMatrix();
Matrix4 expected = MathTestHelpers.BuildMatrix(new float[, ]
{
{ 4, 0, 0, 0 },
{ 0, 3, 0, 0 },
{ 0, 0, 2, 0 },
{ 2, 3, 4, 1 },
});
AssertCurrentMatrixEqual(model, expected);
}
public void MovesCorrectly()
{
var camera = new Camera
{
Orientation = new Vector3((float)(Math.PI / 2), (float)-(Math.PI / 3), 0),
MouseSpeedPerMs = 1f / 10
};
camera.Move(10, 20, 30, 1);
camera.UpdateCurrentFrameMatrix();
// The values were measured when it worked correctly. No way I'm calculating these.
Matrix4 expected = MathTestHelpers.BuildMatrix(new [, ]
{
{ 0, 0.866f, -0.5f, 0 },
{ 0, 0.5f, 0.866f, 0 },
{ 1, 0, 0, 0 },
{ -0.0267f, -0.0534f, 0.0801f, 1 },
});
CompareResult result = MathTestHelpers.MatrixCompare(expected, camera.CurrentFrameViewMatrix, epsilon: 1e-3f);
Assert.True(result.AreEqual, result.DifferenceString);
}
public void TestScaleMatrix()
{
var model = new TestModel
{
Scale = new Vector3(2, 3, 4)
};
model.UpdateCurrentWorldMatrix();
Matrix4 expected = MathTestHelpers.BuildMatrix(new float[, ]
{
{ 2, 0, 0, 0 },
{ 0, 3, 0, 0 },
{ 0, 0, 4, 0 },
{ 0, 0, 0, 1 },
});
AssertCurrentMatrixEqual(model, expected);
}
public void TestTranslationMatrix()
{
var model = new TestModel
{
Position = new Vector3(2, 3, 4)
};
model.UpdateCurrentWorldMatrix();
Matrix4 expected = MathTestHelpers.BuildMatrix(new float[, ]
{
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 2, 3, 4, 1 },
});
AssertCurrentMatrixEqual(model, expected);
}
public void TestRotationMatrix()
{
var model = new TestModel
{
Rotation = new Vector3((float)Math.PI, (float)(2 * Math.PI), (float)(3 * Math.PI))
};
model.UpdateCurrentWorldMatrix();
Matrix4 expected = MathTestHelpers.BuildMatrix(new float[, ]
{
{ -1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, -1, 0 },
{ 0, 0, 0, 1 },
});
AssertCurrentMatrixEqual(model, expected);
}
public void TestCombinedMatrix()
{
var model = new TestModel
{
Rotation = new Vector3((float)Math.PI, (float)(2 * Math.PI), (float)(3 * Math.PI)),
Position = new Vector3(2, 3, 4),
Scale = new Vector3(2, 3, 4)
};
model.UpdateCurrentWorldMatrix();
Matrix4 expected = MathTestHelpers.BuildMatrix(new float[, ]
{
{ -2, 0, 0, 0 },
{ 0, 3, 0, 0 },
{ 0, 0, -4, 0 },
{ 2, 3, 4, 1 },
});
AssertCurrentMatrixEqual(model, expected);
}
public void CalculatesPickRay()
{
const int x = 100;
const int y = 200;
var cameraMock = new Mock <ICamera>();
cameraMock.Setup(c => c.CurrentFrameViewMatrix).Returns(MathTestHelpers.BuildMatrix(new float[, ]
{
{ 1, 2, 3, 0 },
{ 1, 2, 3, 0 },
{ 1, 2, 3, 0 },
{ 1, 2, 3, 1 }
}));
cameraMock.Setup(c => c.Position).Returns(new Vector3(10, 20, 30));
ICamera camera = cameraMock.Object;
var viewSize = new Size(1000, 600);
Matrix4 projectionMatrix = MathTestHelpers.BuildMatrix(new float[, ]
{
{ 4, 3, 2, 0 },
{ 4, 3, 2, 0 },
{ 4, 3, 2, 0 },
{ 4, 3, 2, 1 }
});
PickRay ray = PickRay.Pick(x, y, camera, viewSize, projectionMatrix);
var expectedDirection = new Vector3(-0.26726f, -0.53452f, -0.80178f);
Assert.Equal(camera.Position, ray.Position);
CompareResult result = MathTestHelpers.VectorCompare(expectedDirection, ray.Direction, 1e-05f);
Assert.True(result.AreEqual, result.DifferenceString);
}
public void GetsCorrectViewMatrix()
{
var camera = new Camera
{
Position = new Vector3(10, 100, 1000),
Orientation = new Vector3((float)(Math.PI / 2), (float)-(Math.PI / 3), 0)
};
camera.UpdateCurrentFrameMatrix();
// The values were measured when it worked correctly. No way I'm calculating these.
Matrix4 expected = MathTestHelpers.BuildMatrix(new [, ]
{
{ 0, 0.866f, -0.5f, 0 },
{ 0, 0.5f, 0.866f, 0 },
{ 1, 0, 0, 0 },
{ -1000, -58.66f, -81.602f, 1 },
});
CompareResult result = MathTestHelpers.MatrixCompare(expected, camera.CurrentFrameViewMatrix, epsilon: 1e-3f);
Assert.True(result.AreEqual, result.DifferenceString);
}
public void RotatesCorrectly()
{
var camera = new Camera
{
MouseSpeedPerMs = 1f / 5000
};
camera.Rotate(10, 20, 1);
camera.UpdateCurrentFrameMatrix();
// The values were measured when it worked correctly. No way I'm calculating these.
Matrix4 expected = MathTestHelpers.BuildMatrix(new [, ]
{
{ -1, 0, -0.002f, 0 },
{ 0, 1, -0.004f, 0 },
{ 0.002f, -0.004f, -1, 0 },
{ 0, 0, 0, 1 },
});
CompareResult result = MathTestHelpers.MatrixCompare(expected, camera.CurrentFrameViewMatrix, epsilon: 1e-3f);
Assert.True(result.AreEqual, result.DifferenceString);
}
private static void AssertCurrentMatrixEqual(TestModel model, Matrix4 expected)
{
CompareResult result = MathTestHelpers.MatrixCompare(expected, model.CurrentWorldMatrix);
Assert.True(result.AreEqual, result.DifferenceString);
}